iStar D Value D-416 4U Rackmount Server Chassis (Black) Case Type: 4U Rackmount Material: Front Bezel- Aluminum, Handle- Aluminum, Main Chassis- Zinc-Coated Steel M/B Type: ATX, Micro-ATX, Up to 12.0 x 9.6 inch External Bays: 6x 5.25" Drive Bays Internal Bays: 5x 3.5'' Drive Bays Case Type: 4U Rackmount Material: Front Bezel- Aluminum, Handle- Aluminum, Main Chassis- Zinc-Coated Steel M/B Type: ATX, Micro-ATX, Up to 12.0 x 9.6 inch External Bays: 6x 5.25" Drive Bays Internal Bays: 5x 3.5'' Drive Bays Cooling System: 3x 80mm Cooling Fans